Fig. 1
From: Nontargeted homologue series extraction from hyphenated high resolution mass spectrometry data
Exemplary subspace query (black polygons) for the detection of 3-tuples, centered at one peak (blue point) with one detected 3-tuple exemplified in green. Intersections of blue lines with axes indicate the values of the four elements of a x for this peak. Moreover, dashed lines mark the m/z interval defined in Eq. (6). In turn, dotted lines in the top panel mark the RT interval of Eq. (9), whereas dotted lines in the bottom panel indicate the upper and lower bound of intervals related to mass defect differences from Eqs. (7) and (8), respectively